Abstract
This paper analyses the fault current characteristics of a flexible DC grid with a power flow controller (PFC) and proposes a coordinated control method for suppression of fault currents between the PFC and the DC circuit breaker (DCCB). The equivalent circuits of the PFC during different stages of the DC fault are analyzed. Moreover, the influence of the output voltage of the PFC on the fault current is studied. After that, the current suppression characteristics of the current limiting reactor (CLR) and PFC are investigated. Due to the output voltage of the PFC can be flexibly adjusted during the DC fault, the fault current can be suppressed significantly by adjusting the output voltage of the PFC when the DC fault is detected. This paper adopts a bang-bang control for PFC during the fault. Finally, a simulation model was built in Matlab/Simulink to verify the fault current characteristics of the DC grid containing the PFC, and the coordinated control of the PFC was verified.
Original language | English |
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Title of host publication | Proceedings - 2021 IEEE 19th International Power Electronics and Motion Control Conference, PEMC 2021 |
Place of Publication | Piscataway |
Publisher | IEEE |
Pages | 893-898 |
Number of pages | 6 |
ISBN (Electronic) | 978-1-7281-5660-6 |
ISBN (Print) | 978-1-7281-5661-3 |
DOIs | |
Publication status | Published - 2021 |
Event | 2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC) - The Silesian University of Technology, Online Conference/Gliwice, Poland Duration: 25 Apr 2021 → 29 Apr 2021 |
Publication series
Name | Proceedings - 2021 IEEE 19th International Power Electronics and Motion Control Conference, PEMC 2021 |
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Conference
Conference | 2021 IEEE 19th International Power Electronics and Motion Control Conference (PEMC) |
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Abbreviated title | PEMC 2021 |
Country/Territory | Poland |
City | Online Conference/Gliwice |
Period | 25/04/21 → 29/04/21 |
Keywords
- DC fault
- DC grid
- coordinated control
- hybrid DC circuit breaker
- power flow controller